On Fri, 2011-10-21 at 14:58 -0700, Paolo Galtieri wrote:
> > If you try to browse the shares of that machine using the File Manager
> > (Network / Browse Network / Windows Network), do you have more success?
> smbclient -L 192.168.1.110
>
> I get the following. Note that it doesn't matter what I enter when it
> prompts for root password.

OK... how about if you try with the File Manager (nautilus)? I'm pretty
sure that uses libsmbclient, i.e. the same library that
system-config-printer uses.